[igt-dev] [PATCH i-g-t] benchmarks/gem_wsim: Randomise random seed

[Chris Wilson]

To avoid hitting the same rut on each benchmark run, start with a new
random seed. To allow hitting the same rut again, let it be specified
by the user.

Signed-off-by: Chris Wilson <chris at chris-wilson.co.uk>
Cc: Tvrtko Ursulin <tvrtko.ursulin at intel.com>
---
 benchmarks/gem_wsim.c | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/benchmarks/gem_wsim.c b/benchmarks/gem_wsim.c
index 48568ce40..cf2a44746 100644
--- a/benchmarks/gem_wsim.c
+++ b/benchmarks/gem_wsim.c
@@ -2282,8 +2282,9 @@ int main(int argc, char **argv)
 	igt_require(fd);
 
 	init_clocks();
+	srand(time(NULL));
 
-	while ((c = getopt(argc, argv, "hqv2RSHxGdc:n:r:w:W:a:t:b:p:")) != -1) {
+	while ((c = getopt(argc, argv, "hqv2RSHxGdc:n:r:w:W:a:t:b:p:s:")) != -1) {
 		switch (c) {
 		case 'W':
 			if (master_workload >= 0) {
@@ -2300,6 +2301,9 @@ int main(int argc, char **argv)
 		case 'p':
 			prio = atoi(optarg);
 			break;
+		case 's':
+			srand(atoi(optarg));
+			break;
 		case 'a':
 			if (append_workload_arg) {
 				if (verbose)
-- 
2.20.1